HYMENOPTERA APIDAE. NOMADA GRANDIS. 725 



108. MEGACHILE PRUINA. 

 Megncliile pruina, SMITH, Brit. Mus. Cat., i, 190. 



10 c? 9 specimens; Eastern Nevada; 1872; Dr. H. C. Yarrow: 

 Colorado, New Mexico ; Dr. H. C. Yarrow, Dr. Oscar Loew. 



109. MEGACBILE DISPARILIS. 

 Mcgacliile ditsparilis, CRESS., Trans. Am. Ent. Soc., iv, 264. 



1 c? specimen; New Mexico; H. W. Henshaw. 



110. ANTHID1UM MACULIFRONS. 

 Anthidium maculifrons, SMITH, Brit. Mus. Cat. H.ym., ii, 214. 



1 <$ specimen; Colorado; Almont Barnes. 



111. ANTUIDIUM EMARGINATUM. 

 Megachile emarginata-, SAY, Long's 2d Exped., ii, 352. 



2 3 specimens; Eastern Nevada; 1872; Dr. II. C. Yarrow. 



112. ANTHIDIUM ZEBRATUM. 



Anthidium zebratum, CRESS., Trans. Am. Ent. Soc., iv, 270. 

 1 <? specimen; New Mexico; Dr. H. C. Yarrow. 

 113. NOMADA GRANDIS, sp. nov. 



9 . Head ferruginous, densely punctured ; face clothed with yellowish 

 pubescence ; apical half of mandibles black ; posterior orbits more or less 

 yellowish ; the ocelli are sometimes surrounded by a blackish stain ; 

 antennae ferruginous, paler beneath and at extreme tip above. Thorax fer- 

 ruginous, very densely and confluently punctured; collar yellow; meso- 

 thorax with a deeply impressed longitudinal line in front and a black central 

 stripe ; tubercles sometimes yellow, deeply notched anteriorly with black- 

 ish ; scutellum subbilobate, entirely yellow, with a transverse line behind 

 it ; metathorax densely clothed with yellowish pubescence, black at base 

 and down the middle, yellowish on the sides ; tegulee ferruginous. Wings 

 subhyaliue, the apical margins broadly and costal half of marginal cell 

 fuliginous ; nervures at base of wing, costal nervure and stigma ferruginous. 

 Legs ferruginous, clothed with short, golden pubescence ; coxae pubescent, 

 base of middle pair black. Abdomen broad, ovate, very finely and densely 

 punctured, shining, bright yellow ; basal half of first segment, as well as 



